C#映射两个复杂的对象 [英] C# map two complex objects

问题描述

我有四节课:

public class Customer
{
    public string FirstName { get; set; }

    public string LastName { get; set; }

    public List<Product> Product { get; set; }
}

public class Product
{
    public int ProductNumber { get; set; }

    public string ProductColor { get; set; }
}

///////////////////////////////////////////////

public class Customer_
{
    public string FirstName { get; set; }

    public string LastName { get; set; }

    public List<Article> Article { get; set; }
}

public class Article
{
    public int ArticleNumber { get; set; }

    public string ArticleColor { get; set; }
}

还有一个实例:

var Cus = new List<Customer>
{
    new Customer()
    {
        FirstName = "FirstName1",
        LastName = "LastName1",
        Product = new List<Product>
        {
            new Product()
            {
                ProductColor = "ProductColor1",
                ProductNumber = 11
            }
        }
    },               
    new Customer()
    {
        FirstName = "FirstName2",
        LastName = "LastName2",
        Product = new List<Product>
        {
            new Product()
            {
                ProductColor = "ProductColor2",
                ProductNumber = 12
            }
        }
    }
};

我想用实例 Cus 的值创建一个新对象 List< Customer_> .例如 Customer.FirstName = Customer_.FirstName，Customer.Product.ProductColor = Customer_.Article.ArticleColor等

I want to create a new object List<Customer_> with the value of my instance Cus. For example Customer.FirstName = Customer_.FirstName, Customer.Product.ProductColor = Customer_.Article.ArticleColor etc

轻松实现此目的的最佳方法是什么?有人可以使用 Dictionary 吗?

What is the best way to do this easily, could one use a Dictionary?

推荐答案

可以通过使用

Mapping can be accomplished through the use of an Interface.

定义一个或多个接口，这些接口提供逻辑上命名的属性(例如您提到的常见颜色属性)的映射:

Define an interface(s) which provide a mapping of logically named properties such as the common color properties you mention:

// Some entities have different named properties but can be joined
// using those properties. This interface shows a common color which 
// when implemented will route the processing to a common shared property
// which reports and sets the associated color.
public interface IDefinedColor
{
    string Color { get; set; }
}

如果您必须为 Product 和 Article 创建 partial 类，并使它们遵守上述接口.提示，如果使用诸如EF之类的实体映射器，这是使用partials进行这种映射的好方法.实现实现接口并连接通用性:

If you have to create partial classes for Product and Article and have them adhere to said interfaces. Hint if using an entity mapper such as EF this is a great way to do such maping using partials. Implement implement the interface and hook up the commonality:

// Holds the common properties for future processing.
public partial class Product : IDefinedColor
{
    public string Color
    {
        get { return ProductColor; }
        set { ProductColor = value; }
    }
}

然后根据需要从 IDefinedColor 映射实现中解决问题.

Then work off of the IDefinedColor mapped implementations as needed.

通过使用接口，一个方法是让所有未来的开发人员都知道该合同，该合同在属性中指定了业务逻辑相等性，并且未隐藏在其他 joining 类中.

By using interfaces one is letting all future developers know of the contract which specifies a business logic equality in the properties and it is not hidden in other joining classes.

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